AIM Silicone oil is a useful tamponading material used in complex vitroretinal surgery. However, the use of silicone oil is associated with emulsification which can lead to vision threatening complications. The authors developed an experimental model to study the effect of encircling band on silicone oil emulsification. METHODS Two identical artificial eye chambers were constructed with circu...

6. Armaly MF: Ocular tolerance to silicones: 1. Replacement of aqueous and vitreous by silicone fluids. Arch Ophthalmol 68:390, 1962. 7. Lee P, Donovan RH, and Mukai N: Intravitreous injection of silicone: An experimental study. Ann Ophthalmol 1:15, 1969. 8. Foerster MM, Esser J, and Laqua H: Silicone oil and its influence on electrophysiologic findings. Am J Ophthalmol 99:201, 1985. 9. Gregor ...

Aim: Silicone oil is a useful tamponading material used in complex vitroretinal surgery. However, the use of silicone oil is associated with emulsification which can lead to vision threatening complications. The authors developed an experimental model to study the effect of encircling band on silicone oil emulsification. Methods: Two identical artificial eye chambers were constructed with circu...

In their recent paper, Chang and coauthors 1 suggest that silicone lenses should be avoided in phacotrabeculectomy on the basis of their retrospective study of cellular precipitates on intraocular lens (IOL) surfaces. Their finding of statistically increased giant cell precipitates on plate-haptic silicone IOLs (Chiron C10UB) compared with poly(methyl methacrylate) (PMMA) is consistent with the...

We retrospectively reviewed the charts of 40 patients who underwent an uneventful phacoemulsification in both eyes and had an Acrylic IOL (AcrySof) implanted in one eye and a Silicone IOL (SI 30/S 140) in the other. A subset of 18 patients had a mean follow up of 1 1/2 year. In the Acrylic group 1 patient (5.5%) underwent a posterior Yag-capsulotomy. In the Silicone group 6 patients (30%) under...

PURPOSE To present the finding of tiny silicone oil droplets in 15 eyes of 15 patients after intravitreal injections of an anti-vascular endothelial growth factor agent or triamcinolone acetonide and to discuss the likely source of silicone oil. METHODS In an observational case series, charts of patients who had undergone intravitreal injections by one surgeon were reviewed retrospectively. T...

BACKGROUND Characteristic complications have been reported for transconjunctival sutureless vitrectomy, such as postoperative sclerotomy leakage and postoperative hypotony. Particular attention to sclerotomy closure is required in cases of silicone oil tamponade, because postoperative supplementation of silicone oil implies reoperation, whereas postoperative supplement of gas is comparatively e...

PURPOSE The purpose of this study is to report a case of nontuberculous mycobacterial infection after frontalis sling surgery. METHOD A 65-year-old man presented with bilateral painful, erythematous lesions in the brow and upper eyelids. He had a history of frontalis sling surgery for myopathic ptosis 2 years back and all lesions were found localized to the tract of the silicone rod used in t...

We tested whether the silicone swim caps (SC) worn by young swimmers in a tropical climate negatively influence aerobic performance. Nine trained pre- adolescents [11.8 (± 0.8) years] swam randomized 800-m trials (water: 32.9°C, outdoors: shade, 29.2 ± 0.2 °C, 74 ± 0.3 % rh) with a SC or a nude head (NH). Performance times and heart rate (HR) were monitored continuously. Rectal temperature (Tre...

This paper reports the results of an experimental study conducted to characterise the gas-liquid multiphase flows experienced within a vertical riser transporting a range of gas-liquid flow rates. The scale experiments were performed using an air/silicone oil mixture within a 6 m long riser. The superficial air velocities studied ranged from 0.047 to 2.836 m/ s, whilst maintaining a liquid supe...